DONALDSON Co INC (DCI) · Insider trading

What DONALDSON's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months

0 insiders, 0 trades

Sold, 12 months

$8.58M

5 insiders, 0% under a plan

Net, 12 months

−$8.58M

bought less sold

Latest filing

2026-10-05

filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

Bought Sold Largest month: $12.41M

Who traded, two years

Insider	Bought	Sold	Trades	Last trade	Holds after
Carpenter Tod E.Director, Chairman, President and CEO	–	$15.58M	6	2026-09-04	298,699
Scalf Thomas RPresident	–	$4.01M	2	2025-03-17	28,334
Rautio Trudy A.Director	–	$3.50M	3	2025-08-28	29,330
Owens JamesDirector	–	$2.92M	5	2026-04-14	22,565
Briseno GuillermoPresident	–	$2.82M	3	2026-03-26	29,267
Rajendra Ajita GDirector	–	$1.82M	2	2025-12-05	43,993
Becker Amy CChief Legal Officer	–	$1.51M	1	2025-08-28	44,645
Oberton Willard DDirector	–	$1.10M	3	2025-06-04	29,661
Dahlgren Andrew CPresident	–	$245,880	1	2025-08-28	7,504
Pogalz Bradley J.Chief Financial Officer	–	$51,829	1	2025-12-09	434

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

Date	Insider	Trade	Shares	Price	Value	Holds after	Filing
2026-09-04	Carpenter Tod E.Director, Chairman, President and CEO	Sale	31,968	91.10	$2.91M	298,699	Form 4
2026-08-31	Carpenter Tod E.Director, Chairman, President and CEO	Sale	3,032	91.00	$275,912	298,699	Form 4
2026-04-14	Owens JamesDirector	Sale	7,153	89.21	$638,119	22,565	Form 4
2026-04-14	Owens JamesDirector	Sale	6,600	89.21	$588,786	22,565	Form 4
2026-04-13	Owens JamesDirector	Sale	5,921	89.02	$527,087	22,565	Form 4
2026-04-10	Owens JamesDirector	Sale	126	88.82	$11,191	22,565	Form 4
2026-03-26	Briseno GuillermoPresident	Sale	12,000	84.97	$1.02M	29,267	Form 4
2026-03-26	Briseno GuillermoPresident	Sale	8,600	84.97	$730,742	29,267	Form 4
2025-12-09	Pogalz Bradley J.Chief Financial Officer	Sale	566	91.57	$51,829	434	Form 4
2025-12-05	Rajendra Ajita GDirector	Sale	13,200	92.04	$1.21M	43,993	Form 4
2025-12-05	Rajendra Ajita GDirector	Sale	6,600	92.04	$607,464	43,993	Form 4
2025-09-03	Briseno GuillermoPresident	Sale	13,500	79.03	$1.07M	25,309	Form 4
2025-08-28	Becker Amy CChief Legal Officer	Sale	18,500	81.71	$1.51M	44,645	Form 4
2025-08-28	Carpenter Tod E.Director, Chairman, President and CEO	Sale	100,500	80.62	$8.10M	280,261	Form 4
2025-08-28	Dahlgren Andrew CPresident	Sale	3,000	81.96	$245,880	7,504	Form 4
2025-08-28	Rautio Trudy A.Director	Sale	18,700	79.96	$1.50M	29,330	Form 4
2025-08-28	Rautio Trudy A.Director	Sale	13,200	79.96	$1.06M	29,330	Form 4
2025-07-10	Carpenter Tod E.Director, Chairman, President and CEO	Sale	45,808	71.71	$3.28M	280,261	Form 4
2025-07-09	Carpenter Tod E.Director, Chairman, President and CEO	Sale	2,159	71.00	$153,289	280,261	Form 4
2025-07-08	Carpenter Tod E.Director, Chairman, President and CEO	Sale	12,033	71.07	$855,185	280,261	Form 4
2025-06-04	Oberton Willard DDirector	Sale	7,000	69.51	$486,570	29,661	Form 4
2025-04-10	Owens JamesDirector	Sale	18,700	62.02	$1.16M	20,246	Form 4
2025-03-17	Scalf Thomas RPresident	Sale	28,500	69.22	$1.97M	28,334	Form 4
2025-03-05	Oberton Willard DDirector	Sale	7,000	68.22	$477,540	29,599	Form 4
2025-02-28	Scalf Thomas RPresident	Sale	29,500	68.89	$2.03M	28,334	Form 4
2025-01-02	Oberton Willard DDirector	Sale	2,000	67.95	$135,900	28,137	Form 4
2025-01-02	Rautio Trudy A.Director	Sale	14,000	67.60	$946,400	26,420	Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

65 × grant or award27 × option exercise11 × shares withheld for tax1 × gift

Show them

Date	Insider	What	Shares	Price	Holds after	Filing
2026-10-02	Hilger Christopher M.Director	Grant or award A	+402	88.65	16,692	Form 4
2026-10-02	Owens JamesDirector	Grant or award A	+268	88.65	23,261	Form 4
2026-10-02	Rautio Trudy A.Director	Grant or award A	+336	88.65	28,541	Form 4
2026-10-02	Smiley Jacinth CDirector	Grant or award A	+268	88.65	8,540	Form 4
2026-09-24	Becker Amy CChief Legal Officer	Grant or award A	+5,983	–	53,447	Form 4
2026-09-24	Becker Amy CChief Legal Officer	Shares withheld for tax F	−2,944	86.60	50,503	Form 4
2026-09-24	Carpenter Tod E.Director, Chairman, President and CEO	Grant or award A	+38,131	–	336,830	Form 4
2026-09-24	Carpenter Tod E.Director, Chairman, President and CEO	Shares withheld for tax F	−18,761	86.60	318,069	Form 4
2026-09-24	Driesen Bart C.President	Grant or award A	+4,465	–	14,577	Form 4
2026-09-24	Driesen Bart C.President	Shares withheld for tax F	−2,661	86.60	11,916	Form 4
2026-09-24	Lewis Richard BrentPresident	Grant or award A	+6,340	–	50,966	Form 4
2026-09-24	Lewis Richard BrentPresident	Shares withheld for tax F	−149	86.60	50,817	Form 4
2026-09-04	Carpenter Tod E.Director, Chairman, President and CEO	Option exercise M	+31,968	42.72	330,667	Form 4
2026-08-31	Carpenter Tod E.Director, Chairman, President and CEO	Option exercise M	+3,032	42.72	301,731	Form 4
2026-08-27	Pogalz Bradley J.Chief Financial Officer	Option exercise M	+3,000	42.72	3,434	Form 4
2026-08-27	Pogalz Bradley J.Chief Financial Officer	Shares withheld for tax F	−2,129	91.84	1,305	Form 4
2026-07-03	Hilger Christopher M.Director	Grant or award A	+400	89.09	16,244	Form 4
2026-07-03	Owens JamesDirector	Grant or award A	+267	89.09	22,913	Form 4
2026-07-03	Rautio Trudy A.Director	Grant or award A	+334	89.09	28,106	Form 4
2026-07-03	Smiley Jacinth CDirector	Grant or award A	+267	89.09	8,243	Form 4
2026-04-14	Owens JamesDirector	Option exercise M	+7,153	42.26	29,718	Form 4
2026-04-14	Owens JamesDirector	Option exercise M	+6,600	48.96	29,165	Form 4
2026-04-13	Owens JamesDirector	Option exercise M	+5,921	42.26	28,486	Form 4
2026-04-10	Owens JamesDirector	Option exercise M	+126	42.26	22,691	Form 4
2026-04-03	Hilger Christopher M.Director	Grant or award A	+418	85.23	15,799	Form 4
2026-04-03	Owens JamesDirector	Grant or award A	+279	85.23	22,565	Form 4
2026-04-03	Rautio Trudy A.Director	Grant or award A	+349	85.23	27,673	Form 4
2026-04-03	Smiley Jacinth CDirector	Grant or award A	+279	85.23	7,948	Form 4
2026-03-26	Briseno GuillermoPresident	Option exercise M	+12,000	42.72	41,267	Form 4
2026-03-26	Briseno GuillermoPresident	Option exercise M	+8,600	45.43	37,867	Form 4
2026-01-02	Cruz PilarDirector	Grant or award A	+900	–	16,747	Form 4
2026-01-02	Hilger Christopher M.Director	Grant or award A	+375	89.93	14,442	Form 4
2026-01-02	Hilger Christopher M.Director	Grant or award A	+900	–	15,342	Form 4
2026-01-02	Milroy Douglas A.Director	Grant or award A	+900	–	2,473	Form 4
2026-01-02	Olson Richard MDirector	Grant or award A	+900	–	6,090	Form 4
2026-01-02	Owens JamesDirector	Grant or award A	+900	–	21,965	Form 4
2026-01-02	Owens JamesDirector	Grant or award A	+250	89.93	22,215	Form 4
2026-01-02	Rajendra Ajita GDirector	Grant or award A	+900	–	44,997	Form 4
2026-01-02	Rautio Trudy A.Director	Grant or award A	+900	–	26,924	Form 4
2026-01-02	Rautio Trudy A.Director	Grant or award A	+311	89.93	27,235	Form 4
2026-01-02	Shine Daniel PDirector	Grant or award A	+900	–	1,000	Form 4
2026-01-02	Smiley Jacinth CDirector	Grant or award A	+900	–	7,394	Form 4
2026-01-02	Smiley Jacinth CDirector	Grant or award A	+250	89.93	7,644	Form 4
2025-12-09	Pogalz Bradley J.Chief Financial Officer	Option exercise M	+1,000	28.00	1,000	Form 4
2025-12-08	Shine Daniel PDirector	Grant or award A	+100	–	100	Form 4
2025-12-05	Rajendra Ajita GDirector	Option exercise M	+13,200	42.26	57,193	Form 4
2025-12-05	Rajendra Ajita GDirector	Option exercise M	+6,600	48.96	50,593	Form 4
2025-10-03	Hilger Christopher M.Director	Grant or award A	+409	82.61	14,032	Form 4
2025-10-03	Owens JamesDirector	Grant or award A	+272	82.61	20,997	Form 4
2025-10-03	Rautio Trudy A.Director	Grant or award A	+339	82.61	25,960	Form 4
2025-10-03	Smiley Jacinth CDirector	Grant or award A	+272	82.61	6,473	Form 4
2025-10-02	Lewis Richard BrentPresident	Option exercise M	+13,500	28.00	53,279	Form 4
2025-10-02	Lewis Richard BrentPresident	Shares withheld for tax F	−8,982	82.08	44,297	Form 4
2025-09-25	Becker Amy CChief Legal Officer	Grant or award A	+5,541	–	50,186	Form 4
2025-09-25	Becker Amy CChief Legal Officer	Shares withheld for tax F	−2,727	80.04	47,459	Form 4
2025-09-25	Carpenter Tod E.Director, Chairman, President and CEO	Grant or award A	+36,296	–	316,557	Form 4
2025-09-25	Carpenter Tod E.Director, Chairman, President and CEO	Shares withheld for tax F	−17,858	80.04	298,699	Form 4
2025-09-25	Lewis Richard BrentPresident	Grant or award A	+5,942	–	39,919	Form 4
2025-09-25	Lewis Richard BrentPresident	Shares withheld for tax F	−140	80.04	39,779	Form 4
2025-09-25	Briseno GuillermoPresident	Grant or award A	+3,935	–	29,244	Form 4
2025-09-03	Briseno GuillermoPresident	Option exercise M	+13,500	28.00	38,809	Form 4
2025-08-28	Becker Amy CChief Legal Officer	Option exercise M	+18,500	28.00	63,145	Form 4
2025-08-28	Carpenter Tod E.Director, Chairman, President and CEO	Option exercise M	+100,500	28.00	380,761	Form 4
2025-08-28	Dahlgren Andrew CPresident	Option exercise M	+3,000	28.00	10,504	Form 4
2025-08-28	Rautio Trudy A.Director	Option exercise M	+18,700	28.43	48,030	Form 4
2025-08-28	Rautio Trudy A.Director	Option exercise M	+13,200	42.26	42,530	Form 4
2025-08-28	Rautio Trudy A.Director	Gift G	−3,709	–	25,621	Form 4
2025-07-10	Carpenter Tod E.Director, Chairman, President and CEO	Grant or award A	+45,808	28.00	326,069	Form 4
2025-07-09	Carpenter Tod E.Director, Chairman, President and CEO	Grant or award A	+2,159	28.00	282,420	Form 4
2025-07-08	Carpenter Tod E.Director, Chairman, President and CEO	Grant or award A	+12,033	28.00	292,294	Form 4
2025-07-07	Hilger Christopher M.Director	Grant or award A	+316	71.26	13,479	Form 4
2025-07-07	Oberton Willard DDirector	Grant or award A	+53	71.26	29,834	Form 4
2025-07-07	Owens JamesDirector	Grant or award A	+316	71.26	20,649	Form 4
2025-07-07	Rautio Trudy A.Director	Grant or award A	+393	71.26	29,223	Form 4
2025-07-07	Smiley Jacinth CDirector	Grant or award A	+316	71.26	6,178	Form 4
2025-06-09	Cebulla Andrew J.Corporate Controller	Shares withheld for tax F	−489	70.38	1,638	Form 4
2025-06-04	Oberton Willard DDirector	Option exercise M	+7,000	28.43	36,661	Form 4
2025-06-04	Lewis Richard BrentPresident	Option exercise M	+10,000	35.80	41,201	Form 4
2025-06-04	Lewis Richard BrentPresident	Shares withheld for tax F	−7,369	69.29	33,832	Form 4
2025-04-10	Owens JamesDirector	Option exercise M	+18,700	28.43	38,946	Form 4
2025-04-04	Hilger Christopher M.Director	Grant or award A	+370	60.84	13,120	Form 4
2025-04-04	Oberton Willard DDirector	Grant or award A	+62	60.84	29,661	Form 4
2025-04-04	Owens JamesDirector	Grant or award A	+370	60.84	20,246	Form 4
2025-04-04	Rautio Trudy A.Director	Grant or award A	+460	60.84	28,705	Form 4
2025-04-04	Smiley Jacinth CDirector	Grant or award A	+370	60.84	5,837	Form 4
2025-03-17	Scalf Thomas RPresident	Option exercise M	+28,500	42.72	56,834	Form 4
2025-03-05	Oberton Willard DDirector	Option exercise M	+7,000	28.43	36,599	Form 4
2025-02-28	Scalf Thomas RPresident	Option exercise M	+29,500	28.00	57,834	Form 4
2025-01-02	Cruz PilarDirector	Grant or award A	+1,300	–	15,609	Form 4
2025-01-02	Hilger Christopher M.Director	Grant or award A	+1,300	–	12,379	Form 4
2025-01-02	Hilger Christopher M.Director	Grant or award A	+334	67.29	12,713	Form 4
2025-01-02	Oberton Willard DDirector	Option exercise M	+2,000	28.43	30,137	Form 4
2025-01-02	Oberton Willard DDirector	Grant or award A	+1,300	–	29,437	Form 4
2025-01-02	Oberton Willard DDirector	Grant or award A	+56	67.29	29,493	Form 4
2025-01-02	Olson Richard MDirector	Grant or award A	+1,300	–	5,112	Form 4
2025-01-02	Owens JamesDirector	Grant or award A	+1,300	–	19,465	Form 4
2025-01-02	Owens JamesDirector	Grant or award A	+334	67.29	19,799	Form 4
2025-01-02	Rajendra Ajita GDirector	Grant or award A	+1,300	–	43,612	Form 4
2025-01-02	Rautio Trudy A.Director	Option exercise M	+14,000	36.84	40,420	Form 4
2025-01-02	Rautio Trudy A.Director	Grant or award A	+1,300	–	27,720	Form 4
2025-01-02	Rautio Trudy A.Director	Grant or award A	+416	67.29	28,136	Form 4
2025-01-02	Smiley Jacinth CDirector	Grant or award A	+1,300	–	5,112	Form 4
2025-01-02	Smiley Jacinth CDirector	Grant or award A	+334	67.29	5,446	Form 4
2025-01-02	Milroy Douglas A.Director	Grant or award A	+1,300	–	4,069	Form 4

How to read it

Buy, sale: Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan: A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after: The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value: Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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